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Sagot :

Bonjour,

a²-b² = (a-b) (a+b)

A= ( x-4) (x+4)

B= (1-y) (1+y)

C= ( 10x-3) (10x+3)

D= ( 6-9z) ( 6+9z)

fais l' autre:

4x² -> 2x

25 -> 5

F= (x+3 -4) (x +3 +4)

= (x-1) ( x+7)

G= ( 2x+1 -5)( 2x+1+5)

= (2x-4) ( 2x+6)

 

H=  (3i+7 -i -5) ( 3i+7 + i+5)

= (2i +2) ( 4i +12)

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